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172938 — PUMP ASSEMBLY,POWER STEERING,VEH

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

172938: PUMP ASSEMBLY,POWER STEERING,VEH.

PUMP ASSEMBLY,POWER STEERING,VEH. This part is cataloged in the U.S. Government catalog under NSN 5310-00-017-2938, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
172938
NSN: 5310-00-017-2938
NIINs: 000172938, 001856865
FSC: 5310 — Nuts and Washers
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
special_features200 PSI MAX PRESSURE;5.5 GPM AT 100 PSI AND 1500 RPM; 1250 PSI RELIEF VALVE SETTING; NO RESERVOIR OR MANIFOLD; CW SHAFT ROTAION;TANG SHAFT DRIVE RPM
NSN5310-00-017-2938
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 172938 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
WIDTH ACROSS FLATS: 1.031 INCHES MINIMUM AND 1.0625 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
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MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
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THREAD DIRECTION: RIGHT-HAND
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NOMINAL THREAD SIZE: 0.625 INCHES IN
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NUT HEIGHT: 0.587 INCHES MINIMUM AND 0.631 INCHES MAXIMUM IN
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SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
•
NUT STYLE: SLOTTED, HEXAGON
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.031 INCHES MINIMUM AND 1.0625 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.625 INCHES IN
NUT HEIGHT0.587 INCHES MINIMUM AND 0.631 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
NUT STYLESLOTTED, HEXAGON
THREAD CLASS3B
THREAD QUANTITY PER INCH11
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 172938?
172938 is a PUMP ASSEMBLY,POWER STEERING,VEH.
What is the NSN for 172938?
172938 is cataloged in the U.S. Government catalog under NSN 5310-00-017-2938. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.